本文介绍了错误MIDL2003:重新定义:IMyInterface的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在修改MFC项目odl文件以添加新接口ILayer，但是该文件已经存在于其他项目中，因此在构建所有项目时，我会收到与重新定义相关的错误.如下:
Hi,
I am modifying the MFC project odl file for adding new interface ILayer but it is already exists in other project so when I build all the projects I am getting the redefinition related error. as below:
f:\clearcase\compomap_source\compomap_cvob\source\vs2010\comworkspace\workspacetest\stdafx.h(68): warning C4278: 'min': identifier in type library '..\..\Debug\ComMapServer.exe' is already a macro; use the 'rename' qualifier
4>f:\clearcase\compomap_source\compomap_cvob\source\vs2010\comworkspace\workspacetest\stdafx.h(68): warning C4278: 'max': identifier in type library '..\..\Debug\ComMapServer.exe' is already a macro; use the 'rename' qualifier
5> Processing C:\Program Files\Microsoft SDKs\Windows\v7.0A\include\msxml.idl
5> msxml.idl
5> Processing ..\ComWorkspace\ComWorkspace.idl
5> ComWorkspace.idl
5> Processing ..\ComMapWorks\ComMapServer\ComMapServer.idl
5> ComMapServer.idl
5>.\CompoMap.odl(1329): error MIDL2003: redefinition : ILayer
5>.\CompoMap.odl(1521): error MIDL2003: redefinition : IItem
5>.\CompoMap.odl(2328): warning MIDL2214: semantic check incomplete due to previous errors
6>------ Build started: Project: compotest, Configuration: Debug Win32 ------推荐答案
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